Overview
The TMCS1108A1UQDR is a high-accuracy, galvanically isolated Hall-effect current sensor produced by Texas Instruments. This device is designed for precise DC or AC current measurement, offering excellent linearity and temperature stability. It features a low-drift, temperature-compensated signal chain that ensures a total error of ±1% typical and ±3% maximum across the device temperature range of –40°C to 125°C. The TMCS1108A1UQDR is part of the TMCS1108 family, which includes multiple sensitivity options to cater to various application requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sensitivity | 50 mV/A | mV/A |
| Total Error | ±1% typical, ±3% maximum | % |
| Sensitivity Error | ±0.9% | % |
| Offset Error | ±40 mA | mA |
| Offset Drift | ±0.2 mA/°C | mA/°C |
| Linearity Error | ±0.5% | % |
| Operating Supply Range | 3 V to 5.5 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Galvanic Isolation | 100 V | V |
| Input Conductor Resistance | 1.8 mΩ | mΩ |
| Allowable Continuous RMS Current | Up to 16 A at 125°C | A |
| Supply Current | Maximum 6 mA | mA |
Key Features
- Bidirectional and Unidirectional Current Sensing: Supports both bidirectional and unidirectional current measurements.
- Multiple Sensitivity Options: Available in various sensitivity options (50 mV/A, 100 mV/A, 200 mV/A, 400 mV/A) to suit different application needs.
- Zero Drift Internal Reference: Ensures stable output voltage without significant drift over temperature.
- Robust Galvanic Isolation: Provides 100-V functional isolation between the current path and circuitry, ensuring safety and reliability.
- High Accuracy and Linearity: Offers high accuracy with a total error of ±1% typical and ±3% maximum, along with excellent linearity across the operating temperature range.
- Integrated Electrical Shielding: Enhances common-mode rejection and transient immunity.
- Low Power Loss and Thermal Dissipation: The low conductor resistance minimizes power loss and thermal dissipation.
Applications
- Motor and Load Control: Suitable for precise current measurement in motor control systems.
- Inverter and H-Bridge Current Measurements: Ideal for measuring currents in inverter and H-bridge configurations.
- Power Factor Correction: Used in power factor correction circuits to ensure efficient power management.
- Overcurrent Protection: Helps in implementing overcurrent protection mechanisms to prevent system damage.
- DC and AC Power Monitoring: Applicable for monitoring both DC and AC power in various industrial and consumer electronics.
Q & A
- What is the typical total error of the TMCS1108A1UQDR?
The typical total error is ±1%, with a maximum error of ±3% across the temperature range of –40°C to 125°C.
- What are the sensitivity options available for the TMCS1108 family?
The TMCS1108 family is available in sensitivity options of 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A.
- What is the operating supply range of the TMCS1108A1UQDR?
The device operates within a supply range of 3 V to 5.5 V.
- What is the signal bandwidth of the TMCS1108A1UQDR?
The signal bandwidth is 80 kHz.
- Does the TMCS1108A1UQDR support bidirectional current sensing?
- What is the galvanic isolation rating of the TMCS1108A1UQDR?
The device has a 100-V functional isolation between the current path and circuitry.
- What is the maximum allowable continuous RMS current for the TMCS1108A1UQDR?
The maximum allowable continuous RMS current is up to 16 A at 125°C.
- What is the typical supply current of the TMCS1108A1UQDR?
The typical supply current is 6 mA.
- What are some common applications of the TMCS1108A1UQDR?
Common applications include motor and load control, inverter and H-bridge current measurements, power factor correction, overcurrent protection, and DC and AC power monitoring.
- Does the TMCS1108A1UQDR have integrated electrical shielding?
